Our solar system was formed about four and a half billion years ago, from a massive cloud of gas and dust which collapsed on ...

In late 2017, a mysterious object tore through our solar system at breakneck speed. Astronomers scrambled to observe the fast ...

Scientists have hypothesized since the 1960s that the sun is a source of ingredients that form water on the moon. When a ...

A new study modeled the chemistry of TOI-270 d, an exoplanet between Earth and Neptune in size, finding evidence that it could be a giant rocky planet shrouded in a thick, hot atmosphere. TOI-270 d is ...